In email discussion with MPB on selling a lens. They've offered me a reasonable dealer's quote on the assumption the lens is in Exc++ with free collection. I then asked if they found the lens was not in Exc++ and then offered a lower sum. If I refused would there be a charge for returning the lens. They have answered there would be free return carriage. All well and good but I've not yet gone ahead as I'd liked to ask you good people if you've had dealings with the company and how did you find the procedure.